The first Anime I remember watching was the Original Gigantor, Voltron and Dragonball back in 89-19. I remember explicitly putting in the VHS cassette in the player and watching Gigantor with my parents...Ah, good times!

My two older brothers always got to choose what we watched and it usually ended it up being DBZ, Pokemon, Yu-Gi-Oh!, and Digimon.
It wasn't until I was about 9 or 10 I remember my brothers were watching Naruto and I asked them what it was and they told me about anime so it wasn't until then I knew what anime actually was.

The answer to that question is very easy for me. The first anime I was exposed to is also the only anime I've ever truly enjoyed, and that's Sailor Moon. I'm practically an expert in that franchise. Ask me any question you want about Sailor Moon and I'll have an answer for you, most of the time without having to research it.